Improvement in loom-shuttles



W. M. PARKER.

mvsmna \NiTNESSES.

UNITED STATES PATENT QFFIGE.

WILLIAM M. rAHKE or MEDFORD, MASsAoHUsErrS, ASSIGNOR 'ro ALLEN WILSON,or NASHUA, NEW HAMPSHIRE.

IMPROVEMENT IN LOOM-SHUTTLES.

Specification forming part of Letters Patent No. 148,135., dated Marzh3,1874; application filed January 20, 1874.

To all whom it may concern:

Be it known that I, WM. M. PARKER, of the town of Medford, in the countyof Middlesex and State of Massachusetts, have invented certainImprovements in Loom-Shuttles, of which the following is aspecification:

My invention relates to the shuttle-spindle and spindle-head, its objectbeing to prevent the cop from starting forward on the spindle when theshuttle is stopped inthe shuttle-box.

Figure 1 represents a shuttle with my improved spindle and spindle-head,showing a longitudinal central section of the rear part of the shuttleand a plan view of my improvement. Fig. 2 is a longitudinal centralsection of the several parts of my invention, except the spiral spring,of which a plan view is given.

A is the body of the shuttle. B is the Spin- (lle-head, provided with aforward projection, O. D is the spindle, having a hollow base. E. H is abearing movable on projection O. The forward or smaller part of thishearing is screwed into the base end of spindle 1), bringing the collaror larger part in contact with the end of the spindle. L is anotherhearing, held in position at the forward end of projection 0 by pin (1and spiral spring Gr, spindle .1) being movable upon it. G is a spiralspring, placed on projection 0 between hearings H and L, undersufficient compression to hold the collar of bearing H firmly againstthe base or shoulder of projection 0, except when the momentum of thespindle and cop, upon the sudden stopping of the shuttle when moving inthe direction of the point of the spindle, is sufficient to partiallyovercome the force of the spring, when the spindle, carrying with itbearing H, slides forward, compressing spring G, by which it isgradually stopped and brought back to its former position.

The yielding of the spring, which allows the spindle to move forward ashort distance with the cop, and the gradual stopping of the same by theincreasing tension of the spring, so far overcome the momentum of thecop that it will not start forward on the spindle; and when the spring,by the force of its recoil, throws the spindle back against the shoulderof projection O, the cop, if from any cause it has become loose on thespindle,-will be driven back and tightened upon it by the force of itsown momentum, acting in'the direction of the base of the spindle.

The bearin g L may be dispensed with, sprin g G occupying its place,being held in position by pin cl, or otherwise, if bearing H be so eXtended in length that spindle D will have sufficient steadiness in thedifi'erent positions in which it is placed in practical use.

I claim The combination, with a loom-shuttle, of the forward end of saidbearing; all combined and operating substantially as described.

WILLIAM M. PARKER.

\Vitnesses:

WM. E. GHAFFEE, THos. J EWELL.

